KOWALSKA, Małgorzata, DĘBEK, Wojciech and MATUSZCZAK, Ewa. A Successful Pyloromyotomy In A Child With COVID-19 Infection. Journal of Education, Health and Sport. Online. 9 October 2023. Vol. 39, no. 1, pp. 175-184. [Accessed 17 July 2024]. DOI 10.12775/JEHS.2023.39.01.014.